Then they would better understand what any free market is capable of, what it cannot do, but what it does very well.

A regulator has a measuring device, and an actuator which is used to regulate whatever is measured. In between there is some regulation function which calculates which movements of the actuator are necessary to keep the measured value as close to the desired value as possible.

In a market, the thing to be regulated is the price. So people measure the value of something, apply a logic to it (compare to the price at which it is offered), and execute the result by either buying or not buying or haggling for a lower price.

That's it! A market cannot do more.
And if the measuring device is not enabled to correctly measure the value, for example by obfuscating the value by multiple repackaging of something, or by creating the n'th derivative of it, then the consequence is, that the actuator will do something completely stupid and the price will go haywire.

And NOT letting companies die which by all means should have died is Darwin's Nightmare all over again. Letting business units become "too big to fail" is one mistake the market cannot regulate. It needs regulation from outwards to do that. As the market does not measure company size, it can not regulate it.